$346+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Nov 8 — Nov 151
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
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Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 9, 2026.
This Mytrip deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:50 pm -
2 stops21h 35m
Wed 12/29:00 pm -
3 stops34h 57m
Deal found 10/4![Multiple Airlines logo]()
$561
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:45 am -
3 stops30h 05m
Tue 11/177:50 pm -
2 stops27h 10m
Deal found 10/6![Multiple Airlines logo]()
$567
This Trip.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/82:35 pm -
2 stops21h 50m
Mon 12/147:20 am -
2 stops19h 40m
Deal found 10/8![Multiple Airlines logo]()
$599
This SmartFares deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
1 stop32h 40m
Thu 11/124:05 pm -
2 stops41h 21m
Deal found 10/5![Scandinavian Airlines logo]()
$660
This Mytrip deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:45 am -
3 stops30h 55m
Tue 12/86:15 am -
3 stops22h 07m
Deal found 10/4![Multiple Airlines logo]()
$689
This Mytrip deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:10 am -
3 stops29h 25m
Sat 12/1211:35 am -
2 stops35h 25m
Deal found 10/4![Multiple Airlines logo]()
$718
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:35 pm -
3 stops21h 50m
Mon 11/237:20 am -
3 stops19h 40m
Deal found 10/5![Multiple Airlines logo]()
$737
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 9, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/188:25 am -
2 stops31h 10m
Tue 12/16:15 am -
2 stops27h 09m
Deal found 10/7![Scandinavian Airlines logo]()
$864
This Turkish Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/197:05 pm -
1 stop37h 05m
Tue 12/17:05 pm -
1 stop32h 05m
Deal found 10/7![Turkish Airlines logo]()
$912
This United deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:50 pm -
1 stop14h 05m
Sun 10/257:05 am -
1 stop14h 55m
Deal found 10/5![Multiple Airlines logo]()
$1,019
This Delta deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:05 pm -
1 stop14h 35m
Tue 11/176:40 am -
1 stop15h 07m
Deal found 10/5![Delta logo]()
$1,019
This Scandinavian Airlines deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/17:20 am -
2 stops22h 05m
Mon 12/79:00 pm -
2 stops35h 55m
Deal found 10/7![Scandinavian Airlines logo]()
$864
This Scandinavian Airlines deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:38 am -
2 stops16h 52m
Tue 11/177:00 am -
3 stops23h 13m
Deal found 10/6![Scandinavian Airlines logo]()
$887
This Turkish Airlines deal was found by Cheapflights users on 10/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/117:05 pm -
1 stop30h 15m
Fri 12/1812:15 pm -
1 stop38h 55m
Deal found 10/9![Turkish Airlines logo]()
$997
This KLM deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:05 pm -
1 stop14h 35m
Mon 11/166:40 am -
1 stop15h 07m
Deal found 10/4![Multiple Airlines logo]()
$1,019
This Delta deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/2110:52 pm -
2 stops31h 48m
Mon 11/302:05 pm -
1 stop31h 45m
Deal found 10/7![Delta logo]()
$1,023
This Delta deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/111:30 am -
2 stops19h 10m
Tue 12/86:40 am -
1 stop15h 10m
Deal found 10/4![Delta logo]()
$1,024
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated October 9, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated October 9, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/910:50 am -
3 stops21h 30m
Thu 10/158:30 pm -
2 stops30h 29m
Deal found 10/5![Multiple Airlines logo]()
$763
This SmartFares deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:55 pm -
1 stop32h 40m
Thu 11/124:05 pm -
2 stops41h 21m
Deal found 10/5![Scandinavian Airlines logo]()
$660
This Mytrip deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:45 am -
3 stops30h 05m
Tue 11/177:50 pm -
2 stops27h 10m
Deal found 10/6![Multiple Airlines logo]()
$567
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/162:35 pm -
3 stops21h 50m
Mon 11/237:20 am -
3 stops19h 40m
Deal found 10/5![Multiple Airlines logo]()
$737
This Mytrip deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/182:50 pm -
2 stops21h 35m
Wed 12/29:00 pm -
3 stops34h 57m
Deal found 10/4![Multiple Airlines logo]()
$561
This Mytrip deal was found by Cheapflights users on 10/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:40 am -
3 stops30h 55m
Thu 11/266:15 am -
3 stops25h 42m
Deal found 10/5![Multiple Airlines logo]()
$770
This Mytrip deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2610:10 am -
3 stops29h 25m
Sat 12/1211:35 am -
2 stops35h 25m
Deal found 10/4![Multiple Airlines logo]()
$718
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated October 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:35 pm -
2 stops25h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$346
This Kiwi.com deal was found by Cheapflights users on 10/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/142:35 pm -
2 stops34h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Multiple Airlines logo]()
$361
This Trip.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/242:35 pm -
2 stops23h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$364
This Trip.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/92:35 pm -
2 stops21h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 10/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
2 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$378
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/232:35 pm -
2 stops35h 05m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$384
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/212:35 pm -
2 stops18h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 10/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/312:35 pm -
2 stops18h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/4![Multiple Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 10/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/222:35 pm -
2 stops14h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$390
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $555 (Mytrip) |
One-way from | $334 (Mytrip) |
Popular in | June |
Cheapest in | January |
Average price | $869 |
Good round-trip deal | $912 or less |
Good one-way deal | $1,794 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 9, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sat 11/14
2:35 pm-11:30 am
2 stops34h 55m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$361
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 12/9
2:35 pm-10:25 pm
2 stops21h 50m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$373
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
2:35 pm-7:20 pm
2 stops18h 45m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$388
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
1:13 pm-3:20 pm
1 stop16h 07m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$431
Quickest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
2:35 pm-1:00 pm
1 stop12h 25m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$580
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
7:05 pm-11:20 am
1 stop30h 15m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$581
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sat 11/14
2:35 pm-1:00 pm
1 stop12h 25m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$622
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 11/25
2:50 pm-6:45 pm
1 stop17h 55m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$636
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 11/18
8:25 am-1:35 am
2 stops31h 10m
Helsinki-Vantaa
Tue 12/1
6:15 am-11:24 pm
2 stops27h 09m
$864
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Tue 12/1
7:20 am-3:25 pm
2 stops22h 05m
Helsinki-Vantaa
Mon 12/7
9:00 pm-10:55 pm
2 stops35h 55m
$864
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 13 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,183). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
How much does it cost to fly round-trip from Seattle to Helsinki?
Airfare is below average for this route at the moment.
Seattle to Helsinki flights typically cost between $865 and $938 in November.The cheapest round-trip price found within the last 5 days was $561 on Multiple Airlines (Nov 18-Dec 2).
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated October 9, 2026.
Get a feel of what it's like to fly with Delta,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Crew
8.5
Food
7.2
Comfort
7.8
Overall
7.8
Boarding
8.1
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Helsinki?
Book flights to Helsinki if you plan to visit one of these locationsVantaa
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Complete your trip
Complete your trip to Helsinki by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Seattle to Helsinki by cabin class
Find flights from Seattle to Helsinki, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helsinki
Explore flights to Helsinki departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 9, 2026.
Seattle and Helsinki flights
Browse other Seattle and Helsinki flight options. Last updated on October 9, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on October 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Helsinki
Discover the top 4 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated October 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$353 | Average$549 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$528 | Average$915 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$731 | Average$1,069 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$845 | Average$1,188 | FlexibilityNo cancel fee | On-time76% |